電子ホイッスル 充電式 審判 コーチ 教師 電動ホイッスル ハンドヘルド ホイッスル USB充電付き アウトドア スポーツ ゲーム 緊急ホイッスル ランヤード付き 4トーン 大容量 ブルー

Descripción

🚀 Elevate your game with the whistle that works as hard as you do!

This rechargeable electronic whistle features a powerful 125dB output with 4 adjustable tones, powered by a 2500mAh lithium battery offering up to 9 hours of continuous use. Designed with ergonomic one-button operation, durable ABS construction, LED lighting, and a detachable lanyard, it’s perfect for coaches, referees, and emergency use. USB rechargeable and backed by a 12-month warranty, it combines cutting-edge tech with practical convenience.